Description For the specified explicit surface and u,v-parameters, returns point (x,y,z) along two vectors (au,bu,cu) & (av,bv,cv). These vectors lie along the respective u & v directions in parametric space.
Syntax success = ExplicitSurfEvalUV ( n, u, v, x, y, z, au, bu, cu, av, bv, cv )
Parameters success (Boolean) Returns True if surface is evaluated and False if the surface was not evaluated or the specified point is not within the surface's valid u-v parameter limits.
n As Long Node number of Explicit surface.
u As Double U-parameter of Explicit Surface.
v As Double V-parameter of Explicit Surface.
x As Double X coordinate of point specified by u & v parameter.
y As Double Y coordinate of point specified by u & v parameter.
z As Double Z coordinate of point specified by u & v parameter.
au As Double X-component of u-vector normal to surface at point specified by u & v parameter.
bu As Double Y-component of u-vector normal to surface at point specified by u & v parameter.
cu As Double Z-component of u-vector normal to surface at point specified by u & v parameter.
av As Double X-component of v-vector normal to surface at point specified by u & v parameter.
bv As Double Y-component of v-vector normal to surface at point specified by u & v parameter.
cv As Double Z-component of v-vector normal to surface at point specified by u & v parameter.
Remarks For the specified explicit surface and u,v-parameters, returns point (x,y,z) along two vectors (au,bu,cu) & (av,bv,cv). These vectors lie along the respective u & v directions in parametric space. The lengths of vectors (au,bu,cu) & (av,bv,cv) is proportional to the derivative of the explicit function in the u & v parameter spaces, respectively.
See Also
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